High efficient photodegradation of organic dyes by TiO 2 /graphene composite under visible light radiation
Desalination and Water Treatment, ISSN: 1944-3986, Vol: 213, Page: 319-327
2021
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Article Description
An efficient visible light-responsive TiO 2 /graphene composite was synthesized easily by grinding. The structure and morphology of the composite were characterized by powder X-ray diffraction, Raman spectroscopy, ultra-high-resolution transmission electron microscopy, and field emission scanning electron microscopy. The photocatalytic characteristics were studied by degrading methylene blue under different conditions such as pH, catalyst dosage, different wt.% ratios of TiO 2 /graphene composites, irradiation time, and initial concentration of methylene blue. The results showed that the TiO 2 /2.0% graphene possessed much higher photocatalytic activities under visible light than pure TiO 2, displayed high photochemical stability under repeated irradiation, and can also effectively and selectively degraded a mixture of methyl orange and methylene blue. The degradation of methylene blue followed the pseudo-first-order kinetics of Langmuir–HinShelwood model. In addition, the possible mechanism of photocatalytic degradation process was proposed.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S1944398624091264; http://dx.doi.org/10.5004/dwt.2021.26717; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85100803540&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S1944398624091264; https://dx.doi.org/10.5004/dwt.2021.26717; https://www.deswater.com/DWT_abstracts/vol_213/213_2021_319.pdf
Elsevier BV
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